CN204290804U

CN204290804U - Frequency conversion control circuit plate

Info

Publication number: CN204290804U
Application number: CN201420778396.8U
Authority: CN
Inventors: 白艳文
Original assignee: SHENZHEN ALLIANCE TECHNOLOGY Co Ltd
Current assignee: SHENZHEN ALLIANCE TECHNOLOGY Co Ltd
Priority date: 2014-06-11
Filing date: 2014-12-11
Publication date: 2015-04-22
Anticipated expiration: 2024-12-11

Abstract

A kind of frequency conversion control circuit plate, be arranged in the motor driving system for load equipment configuration, for providing operational factor for primary in system, standby variable frequency device, the service data of, standby variable frequency device primary to system feedback, and complete active/standby frequency converter and switch.Frequency conversion control circuit plate printed circuit board (PCB), starting relay unit, operation relay unit, power transfer relay unit, the first signal switching relay unit, secondary signal transfer relay unit and the 3rd signal switching relay unit and input/output port group.Most periphery circuit is integrated into printed circuit intralamellar part by input/output port group by the utility model, improves integrated level, decreases peripheral wiring, and by special wiring terminal wiring, improves reliability of electrical connection; Realized automatically by the cooperation of each relay unit, seamlessly, primary frequency converter and standby variable frequency device switch efficiently, safely.

Description

Frequency conversion control circuit plate

Technical field

The utility model relates to the circuit board of having assisted automatic control function, particularly relates to the circuit board that automatically can complete active-standby switch function in order to ensure continuous service.

Background technology

Many main equipments all need configuration motor driving system to complete automation, even unattended operation.And in order to realize automatic control, described motor driving system all completes various automation mechanized operation by intrasystem host computer.Described host computer sends control command according to program setting, and each equipment and the data fed back by system driven equipment in receiving system, host computer judges according to feedback data and sends adjustment control command.In described motor driving system, usually can frequency converter be set, by the adjustment to frequency converter, carrys out control system parameter.In order to ensure motor driving system continuous firing, once system starts, unless run into emergency, in system, each equipment all keeps running status, but equipment fault is difficult to avoid completely, therefore need, for the primary frequency converter of system configuration and at least one standby variable frequency device, when primary frequency converter breaks down, just to drop into standby variable frequency device.Because the electrical connection of frequency converter access motor driving system is complicated, when there being more than one standby variable frequency device, the electrical connection of each frequency converter connecting system is just more complicated, needs for active and standby frequency converter provides complicated electrical connection wiring relation in prior art motor driving system; Not only need out of service for primary frequency converter in active and standby frequency converter handoff procedure, standby variable frequency device is put into operation, also need the director data sent to primary frequency converter to be switched to send to standby variable frequency device, and need primary frequency converter feedback data to be switched to and feed back output by standby variable frequency device, the active and standby frequency converter of prior art switches and can't realize full automation, this is all unfavorable for that motor driving system runs, fault location, runs bring potential safety hazard to systems stay.Prior art active and standby frequency converter handover scheme causes level of integrated system not high, and peripheral wiring is too complicated, and system reliability is poor, and failture evacuation is loaded down with trivial details.

Utility model content

The technical problems to be solved in the utility model is to avoid the deficiencies in the prior art part and proposes for realizing and the frequency conversion control circuit plate that centralized control is primary, standby variable frequency device switches in real time, simplify in motor driving system and be electrically connected wiring relation, improve systems stay reliability of operation, be convenient to failture evacuation.

The utility model solve the technical problem can by realizing by the following technical solutions:

Design, manufacture a kind of frequency conversion control circuit plate, be arranged in the motor driving system for load equipment configuration, for providing operational factor for primary in system, standby variable frequency device, the service data of, standby variable frequency device primary to system feedback, and complete active/standby frequency converter and switch.Described system configuration has host computer, and this host computer exports control command, and the feedback data of each equipment in receiving system.Described primary frequency converter is by main frame contactor connecting system, and standby variable frequency device is by standby host contactor connecting system.Especially, described frequency conversion control circuit plate comprises printed circuit board (PCB), be arranged on the starting relay unit on this printed circuit board (PCB), run relay unit, power transfer relay unit, the first signal switching relay unit, secondary signal transfer relay unit and the 3rd signal switching relay unit, and be arranged on the input/output port group of printed circuit board (PCB).All relay units all comprise respective magnet exciting coil and at least one relay switch.

Described input/output port group comprises power input, often open external start signal input subgroup, normally closed outside stop signal input subgroup, input subgroup is selected in active and standby operation, for receiving the operation input port of the permission run signal from host computer, for receiving the fault input port of the fault-signal from host computer, for receiving the selection main frame input port of the primary frequency converter signal of selection from host computer, for receiving the primary frequency converter action input port from host computer, for receiving the standby host contactor interlocking signal input port of standby host contactor interlock switch signal, for the main frame contactor work input port of Receiving Host contactor operating state, for receiving the standby variable frequency device action input port from host computer, for the main frame contactor interlocking signal input port of Receiving Host contactor interlock switch signal, for receiving the standby host contactor work input port of standby host contactor operating state.

Often open external start signal input subgroup and be usually in the short open state of open circuit, comprising at least one enabling signal input port for being electrically connected normally open switch, making arbitrary normally open switch close conducting and just making often to open external start signal input subgroup and be in closed conducting state.Normally closed outside stop signal input subgroup is in closed conducting state usually, comprising at least one stop signal input port for being electrically connected normally off switch, arbitrary normally off switch open being disconnected and just causes normally closed outside stop signal input subgroup to be in open circuit off-state.When system is normally run, active and standby operation selects input subgroup to be in closed conducting state.

When primary frequency converter comes into operation, main frame contactor closes conducting, and main frame contactor interlocking signal input port must not be electric, otherwise when primary frequency converter does not come into operation, main frame contactor open circuit disconnects, and main frame contactor interlocking signal input port obtains electric.When standby variable frequency device comes into operation, standby host contactor closes conducting, and standby host contactor interlocking signal input port must not be electric, otherwise when standby variable frequency device does not come into operation, standby host contactor open circuit disconnects, and standby host contactor interlocking signal input port obtains electric.

Be electrically connected with supply module between described power input, the output of this supply module is parallel with and starts branch road, main frame operation branch road, hostdown branch road, main frame output branch road and standby host output branch road.Described startup branch road comprise be cascaded often open external start signal input subgroup, magnet exciting coil that input subgroup and starting relay unit are selected in normally closed outside stop signal input subgroup, active and standby operation.Described main frame runs branch road and comprises the operating input signal port be cascaded and the magnet exciting coil running relay unit.Described hostdown branch road comprises the magnet exciting coil of fault-signal input port and the power transfer relay unit be cascaded.Described main frame exports branch road and comprises the selection main frame input port, host activity input port, standby host contactor interlocking signal input port and the main frame contactor work input port that are cascaded.Described standby host exports branch road and comprises the standby host action input port, main frame contactor interlocking signal input port and the standby host contactor work input port that are cascaded.Described standby host contactor work input port two ends are also parallel with the magnet exciting coil of the magnet exciting coil of the first signal switching relay unit, the magnet exciting coil of secondary signal transfer relay unit and the 3rd signal switching relay unit respectively.

When systems are functioning properly, primary frequency converter connecting system, main frame contactor closes conducting, and standby host contactor open circuit disconnects, and namely standby variable frequency device does not have connecting system.Often opening external start signal input subgroup, normally closed outside stop signal input subgroup and active and standby operation selects input subgroup to be all in closed conducting state, the magnet exciting coil of starting relay unit obtains electric, makes each relay switch action of starting relay unit and starts to host computer feedback frequency conversion control circuit plate.Running input port obtains electric, and then runs the magnet exciting coil of relay unit and obtain and electricly make each relay switch action of operation relay unit and feed back primary frequency converter to host computer and put into operation.Fault input port must not electricity, and then the magnet exciting coil of power transfer relay unit must not electricity and make the relay switch of power transfer relay unit be failure to actuate and maintain normality.Main frame input port and host activity input port obtain electric, standby host contactor interlocking signal input port obtains electric because standby host contactor open circuit disconnects, main frame contactor work input port obtains electric because main frame contactor comes into operation, thus makes main frame output branch road all be in closed conducting state.Standby host action input port must not be electric, main frame contactor interlocking signal input port must not be electric because main frame comes into operation, standby host contactor work input port must not be electric because standby host contactor open circuit disconnects, thus make standby host output branch road be in open circuit off-state, and then first magnet exciting coil of signal switching relay unit, the magnet exciting coil of secondary signal transfer relay unit and the magnet exciting coil of the 3rd signal switching relay unit all must not be electric, make the relay switch of the first signal switching relay unit, the relay switch of secondary signal transfer relay unit and the relay switch of the 3rd signal switching relay unit are all failure to actuate and maintain main frame frequency converter and obtain control command and to the state of host computer back-to-back running parameter from host computer.

When primary frequency converter failure, primary frequency converter logs off, standby variable frequency device connecting system, and standby host contactor closes conducting, and main frame contactor open circuit disconnects.Often opening external start signal input subgroup, normally closed outside stop signal input subgroup and active and standby operation selects input subgroup to be in closed conducting state, the magnet exciting coil of starting relay unit obtains electric and makes the relay switch action of starting relay unit, maintains and starts to host computer feedback frequency conversion control circuit plate.Running input port must not be electric, and then the magnet exciting coil running relay unit must not be electric, makes the relay switch of operation relay unit maintain normality.Fault input port obtains electric, and then the magnet exciting coil of power transfer relay unit obtains and electricly makes the relay switch action of power transfer relay unit and feed back primary frequency converter to host computer to be in malfunction.Main frame input port and host activity input port must not be electric, standby host contactor interlocking signal input port because of standby host contactor close conducting and must not electricity, main frame contactor work input port must not be electric because main frame contactor open circuit disconnects, thus make main frame output branch road all be in open circuit off-state.Standby host action input port obtains electric, main frame contactor interlocking signal input port obtains electric because main frame does not come into operation, standby host contactor work input port obtains electric because standby host contactor closes conducting, thus make standby host output branch road be in closed conducting state, and then first magnet exciting coil of signal switching relay unit, the magnet exciting coil of secondary signal transfer relay unit and the magnet exciting coil of the 3rd signal switching relay unit all obtain electric, make the relay switch of the first signal switching relay unit, the relay switch of secondary signal transfer relay unit and the relay switch of the 3rd signal switching relay unit all action and switching states, standby host frequency converter is made to obtain control command and to the state of host computer back-to-back running parameter from host computer.

Specifically, described input/output port group also comprises the first external start signal input port of the first starting switch for being electrical connectors be in normally open, and for the second external start signal input port of the second starting switch of being electrical connectors be in normally open.First, second starting switch described is the switch of manually operation start system cloud gray model, because by operating, action is in closed conducting state.Described external start signal input subgroup of often opening comprises the first external start signal input port and the second external start signal input port that are connected in parallel.Describedly often open the first relay switch that external start signal input subgroup is also parallel with the starting relay unit of normally open.When closed first, during in the second starting switch arbitrary one, often open external start signal input subgroup and be in closed conducting state, normally closed outside stop signal input subgroup and active and standby operation select input subgroup to be all in closed conducting state, the magnet exciting coil of starting relay unit obtains electric, the first relay switch of normally open starting relay unit is made to close conducting, the state of external start signal input subgroup is often opened in shielding, namely no matter first, second starting switch be in which kind of state all lock keep normal over start input subgroup and be in closed conducting state.

Particularly, described input/output port group also comprises the first outside stop signal input port of the first shutdown switch for being electrically connected normally off, for the second outside stop signal input port of the second shutdown switch of being electrically connected normally off, for being electrically connected the emergent stop signal input port of the emergency stop switch of normally off, for the first outside interlocking signal input port of the first interlocking switch of being electrically connected normally off, and for the second outside interlocking signal input port of the second interlocking switch of being electrically connected normally off.The operating state of first, second interlocking switch reflected load equipment described, when load equipment normally works, first, second interlocking switch is failure to actuate and is in closed conducting state, when there is the fault needing halt system to run in load equipment, first, second interlocking switch action and be in open circuit off-state.Described normally closed outside stop signal input subgroup comprises the first outside stop signal input port, the second outside stop signal input port, emergent stop signal input port, the first outside interlocking signal input port and the second outside interlocking signal input port that are cascaded.

More specifically, described input/output port group also comprises the primary input signal port of selection for receiving from upper computer selecting primary frequency converter run signal, for receiving the selection spare input signal port from upper computer selecting standby variable frequency device run signal, for receiving the permission input signal port for subsequent use allowing standby variable frequency device operating instruction from host computer, and for being electrically connected the automatic switchover state output terminal mouth of automatic active/standby diverter switch.When described automatic active/standby diverter switch is in closed conducting state, the switching just arranged between active/standby frequency converter completes automatically.When automatic active/standby diverter switch be in open circuit off-state be need manually to complete with regard to the switching arranged between active/standby frequency converter.Active and standby operation selects input subgroup comprise the primary branch road of selection in parallel and select emergency bypass; The primary branch road of described selection comprises the first relay switch of the power transfer relay unit of the primary input signal port of the selection be cascaded and normally off.Described selection emergency bypass comprises the selection spare input signal port and permission input signal port for subsequent use that are cascaded, and is connected in parallel on the automatic switchover state output terminal mouth selecting spare input signal port two ends.

Described input/output port group also comprises the startup feedback output end mouth for exporting frequency conversion control circuit plate starting state to host computer feedback, for exporting the primary fault feedback output end mouth of primary frequency converter failure state to host computer feedback, for receiving the setpoint frequency input port of the setpoint frequency that host computer exports, for exporting the primary setpoint frequency output port of setpoint frequency to primary frequency converter, for exporting the setpoint frequency output port for subsequent use of setpoint frequency to standby variable frequency device, for exporting the frequency feedback output of running frequency to host computer feedback, for receiving the primary frequency feed back input port of the running frequency feedback parameter from primary frequency converter, for receiving the reserve frequency feed back input port of the running frequency feedback parameter from standby variable frequency device, for the current feedback output to host computer feedback output current parameter, for receiving the primary current feedback input port of the running current feedback parameter from primary frequency converter, for receiving the standby current feed back input port of the running current feedback parameter from standby variable frequency device, for the torque feedback output to host computer feedback Driving Torque parameter, for receiving the primary torque feedback input port of the operation torque feedback parameter from primary frequency converter, for receiving the backup torque feed back input port of the operation torque feedback parameter from standby variable frequency device, for the operation feedback output end mouth to host computer feedback inverter running status, for the standby operation feed back input port to host computer feedback standby variable frequency device running status, for the fault feedback output end mouth to host computer feedback inverter malfunction, and for the alternate fault feed back input port to host computer feedback standby variable frequency device fault.

The two ends of the second relay switch of normally open starting relay unit are electrically connected described startup feedback output end mouth.The two ends of the second relay switch of the power transfer relay unit of normally open are electrically connected primary fault feedback output end mouth.

First relay switch and the second relay switch common port separately of the first signal switching relay unit are electrically connected setpoint frequency input port respectively.First relay switch and the second relay switch normal-closed end separately of the first signal switching relay unit are electrically connected primary setpoint frequency output port respectively.First relay switch of the first signal switching relay unit and the second relay switch action closing end is separately electrically connected setpoint frequency output port for subsequent use respectively.

3rd relay switch and the 4th relay switch common port separately of the first signal switching relay unit are electrically connected frequency feedback output respectively.3rd relay switch and the 4th relay switch normal-closed end separately of the first signal switching relay unit are electrically connected primary frequency feed back input port respectively.3rd relay switch and the 4th relay switch action closing end separately of the first signal switching relay unit are electrically connected reserve frequency feed back input port respectively.

First relay switch and the second relay switch common port separately of secondary signal transfer relay unit are electrically connected current feedback output respectively.First relay switch and the second relay switch normal-closed end separately of secondary signal transfer relay unit are electrically connected primary current feedback input port respectively.First relay switch of secondary signal transfer relay unit and the second relay switch action closing end is separately electrically connected standby current feed back input port respectively.

3rd relay switch and the 4th relay switch common port separately of secondary signal transfer relay unit are electrically connected torque feedback output respectively.3rd relay switch and the 4th relay switch normal-closed end separately of secondary signal transfer relay unit are electrically connected primary torque feedback input port respectively.3rd relay switch and the 4th relay switch action closing end separately of secondary signal transfer relay unit are electrically connected backup torque feed back input port respectively.

First relay switch of the 3rd signal switching relay unit and the second relay switch common port are separately electrically connected respectively and run feedback output end mouth.First relay switch of the 3rd signal switching relay unit and the second relay switch normal-closed end are separately electrically connected the two ends of the first relay switch of the operation relay unit of normally open respectively.First relay switch of the 3rd signal switching relay unit and the second relay switch action closing end is separately electrically connected standby operation feed back input port respectively.

3rd relay switch of the 3rd signal switching relay unit and the 4th relay switch common port is separately electrical connection fault feedback output end mouth respectively.3rd relay switch of the 3rd signal switching relay unit and the 4th relay switch normal-closed end are separately electrically connected the 3rd relay switch of the power transfer relay unit of normally off respectively.3rd relay switch and the 4th relay switch action closing end separately of the 3rd signal switching relay unit are electrically connected alternate fault feed back input port respectively.

For the benefit of fault location, described input/output port group also comprises the operation indication output end mouth for being electrically connected run indicator, for the faulty indication output port of electrical connection fault indicator light, and for being electrically connected the standby operation indication output end mouth of standby variable frequency device run indicator.Run the two ends that indication output end is connected in parallel on the magnet exciting coil running relay unit.Faulty indication output is connected in parallel on the magnet exciting coil of power transfer relay unit.Standby operation indication output end mouth is connected in parallel on standby host contactor work input port two ends.

In order to ensure reliable operating ambient temperature, described motor driving system also comprises at least one strong air-cooler, strong air-cooler by the strong air-cooler contactor access motor driving system of each self-configuring, and exits motor driving system by the strong air-cooler circuit breaker of each self-configuring.

Frequency conversion control circuit plate also comprises the strong air-cooler power transfer relay unit be arranged on this printed circuit board (PCB), and this strong air-cooler power transfer relay unit comprises strong cold magnet exciting coil and strong cold relay switch.

Described input/output port group also comprises the breaker closing input port for receiving strong air-cooler breaker closing status signal, contactor for receiving strong air-cooler contactor closure state signal closes input port, for receiving the circuit breaker trip input port of strong air-cooler breaker trip condition signal, strong cold feedback common terminal, strong cold Normal Feedback output, and strong cold fault output.Strong cold feedback common terminal and strong cold Normal Feedback output are used for feeding back strong air-cooler status signal working properly to host computer, and strong cold feedback common terminal and strong cold fault output are used for feeding back strong air-cooler fault status signal to host computer.

Also be parallel with strong air-cooler between the output of described supply module and run branch road and strong air-cooler fault branch.

Strong air-cooler runs branch road and comprises the breaker closing input port, the 3rd relay switch of normally open starting relay unit and the contactor that are cascaded and close input port.

Strong air-cooler fault branch comprises the strong cold magnet exciting coil of circuit breaker trip input port and the strong air-cooler power transfer relay unit be cascaded.

The strong cold feedback common terminal of common port electrical connection of the strong cold relay switch of strong air-cooler power transfer relay unit, the strong cold Normal Feedback output of normal-closed end electrical connection of the strong cold relay switch of strong air-cooler power transfer relay unit, the action closing end of the strong cold relay switch of strong air-cooler power transfer relay unit is electrically connected strong cold fault output.

In order to fault location, described input/output port group also comprises the strong cold fault instruction port for being electrically connected strong air-cooler malfunction indicator lamp.Strong cold fault instruction port is connected in parallel on the strong cold magnet exciting coil two ends of strong air-cooler power transfer relay unit.

For guaranteeing that described in power supply reliability and continuation, motor driving system also comprises uninterruption power source equipment.

Frequency conversion control circuit plate also comprises and is arranged on time-delay relay unit on this printed circuit board (PCB) and supply relay unit.

Described input/output port group also comprises the supervision input port for monitoring city's electricity condition, power supply for being electrically connected uninterruption power source equipment keeps the power supply of input switch to keep input port, and for providing at least one expansion of power supply output port of power supply to frequency conversion control circuit plate external equipment.

Described supply module comprises the time delay branch road, power supply maintenance branch road and the power supply that are connected in parallel on power input two ends and exports branch road.

Described time delay branch road comprises the time delay magnet exciting coil of supervision input port and the time-delay relay unit be cascaded.

Described power supply keeps branch road to comprise the TDO relay switch of the time-delay relay unit be cascaded and the power supply magnet exciting coil of supply relay unit, and the power supply being connected in parallel on TDO relay switch two ends keeps input port.

Described power supply exports the output that branch road comprises relay switch group and the supply module be cascaded.Described relay switch group comprises the first power supply relay switch, the second power supply relay switch of the supply relay unit be connected in parallel.All expansion of power supply output ports are all connected in parallel on the output two ends of supply module.

For ease of Installation and Debugging, adopt the structure of blockette configured port, described input/output port group is assigned with and is arranged in installation at least two integrated port link blocks on a printed circuit.

Compared with the existing technology comparatively, the technique effect of the utility model " frequency conversion control circuit plate " is:

Most periphery circuit is integrated into printed circuit intralamellar part by input/output port group by the utility model, improves integrated level, decreases peripheral wiring, and by special wiring terminal wiring, improves reliability of electrical connection; Realized automatically by the cooperation of each relay unit, seamlessly, primary frequency converter and standby variable frequency device switch efficiently, safely; There is provided working station indicator by the functional configuration of each relay for running status that is primary, standby variable frequency device, be conducive to fault location rapidly and efficiently; Shake by time-delay relay unit and the effective anti-locking system of supply relay unit matching the harm that electricity brings, guarantee that system can continuous service; Because frequency conversion control circuit plate reduces electrical connection wiring in a large number, be applicable to complicated wiring construction, multiple frequency conversion control circuit plate can realize a main how standby structure, and namely a standby variable frequency device can provide for subsequent use for the primary frequency converter of multiple stage, reduces system constructing cost.

Accompanying drawing explanation

Fig. 1 is the orthographic projection schematic front view of the utility model " frequency conversion control circuit plate " preferred embodiment;

Fig. 2 is described preferred embodiment main electric wiring Part I electricity principle schematic;

Fig. 3 is described main electric wiring Part II electricity principle schematic;

Fig. 4 is described main electric wiring Part III electricity principle schematic;

Fig. 5 is described preferred embodiment system feedback relay switch electric connection structure schematic diagram;

Fig. 6 is that described preferred embodiment realizes frequency setting function relay switch electric connection structure schematic diagram;

Fig. 7 is that described preferred embodiment realizes frequency feedback function relay switch electric connection structure schematic diagram;

Fig. 8 is that described preferred embodiment realizes current feedback function relay switch electric connection structure schematic diagram;

Fig. 9 is that described preferred embodiment realizes torque feedback function relay switch electric connection structure schematic diagram;

Figure 10 is that described preferred embodiment realizes running status feedback handoff functionality relay switch electric connection structure schematic diagram;

Figure 11 is that described preferred embodiment realizes malfunction feedback handoff functionality relay switch electric connection structure schematic diagram;

Figure 12 is that described preferred embodiment realizes strong air-cooler fault feedback function relay switch electric connection structure schematic diagram.

Embodiment

Be described in further detail below in conjunction with accompanying drawing illustrated embodiment.

The utility model proposes a kind of frequency conversion control circuit plate, be arranged in the motor driving system for load equipment configuration, for providing operational factor for primary in system, standby variable frequency device, the service data of, standby variable frequency device primary to system feedback, and complete active/standby frequency converter and switch.

Described motor driving system is configured with host computer, and this host computer exports control command, and the feedback data of each equipment in receiving system.Host computer is the nucleus equipment that motor driving system runs automatically, can by realizations such as technical grade computer, programmable logic controller (PLC)s.Because motor driving system power is large, electricity consumption electric current is large, and the equipment of connecting system, such as frequency converter are all by contactor connecting system.Described primary frequency converter is by main frame contactor connecting system, and standby variable frequency device is by standby host contactor connecting system.

As shown in Figure 1, described frequency conversion control circuit plate comprises printed circuit board (PCB) 8, be arranged on the starting relay unit K1 on this printed circuit board (PCB) 8, run relay unit K2, power transfer relay unit K3, the first signal switching relay unit KA1, secondary signal transfer relay unit KA2 and the 3rd signal switching relay unit KA3, and be arranged on the input/output port group on printed circuit board (PCB) 8.All relay units all comprise respective magnet exciting coil and at least one relay switch.Each relay of the utility model preferred embodiment all comprises respective magnet exciting coil and four relay switchs, for the relay switch do not used in a preferred embodiment, can be used as the relay switch expanding other function.

Described input/output port group comprises power input 101, 102, often open external start signal input subgroup 71, normally closed outside stop signal input subgroup 72, input subgroup 73 is selected in active and standby operation, for receiving the operation input port 139 of the permission run signal from host computer, 140, for receiving the fault input port 143 of the fault-signal from host computer, 144, for receiving the selection main frame input port 147 of the primary frequency converter signal of selection from host computer, 148, for receiving the primary frequency converter action input port 149 from host computer, 150, for receiving the standby host contactor interlocking signal input port 151 of standby host contactor interlock switch signal, 152, for the main frame contactor work input port 153 of Receiving Host contactor operating state, 154, for receiving the standby variable frequency device action input port 155 from host computer, 156, for the main frame contactor interlocking signal input port 157 of Receiving Host contactor interlock switch signal, 158, for receiving the standby host contactor work input port 159 of standby host contactor operating state, 160.Described Monitor Computer Control System ruuning situation, run signal is allowed to make operation input port 139,140 electricly must be in closed conducting state when sending after each device ready in host computer start detection motor driving system, during the non-startup optimization of system, run input port 139,140 and be in open circuit off-state.When according to every feedback data, host computer judges that primary frequency converter is in malfunction, host computer will send fault-signal and make the closed conducting of fault input port 143,144, when motor driving system normally runs, fault input port 143,144 is in open circuit off-state.When according to detection data, host computer judges that primary frequency converter can put into operation, will continue to send and select primary frequency converter signal to make the closed conducting of selection main frame input port 147,148, and continue to send primary frequency converter action command and make primary frequency converter action input port 149,150; When according to detection data, host computer judges that primary frequency converter can not put into operation, will stop paying out and select primary frequency converter signal and primary frequency converter action command, thus order selects main frame input port 147,148 and primary frequency converter action input port 149,150 to be in open circuit off-state.When according to detection data, host computer judges that standby variable frequency device can put into operation, will continue to send standby variable frequency device action command and make standby variable frequency device action input port 155,156; When according to detection data, host computer judges that standby variable frequency device can not put into operation, standby variable frequency device action command will be stopped paying out, thus make standby variable frequency device action input port 155,156 be in open circuit off-state.

Often open external start signal input subgroup 71 to be made up of electrical connection normally open switching device, usually the short open state of open circuit is in, comprising at least one enabling signal input port for being electrically connected normally open switch, making arbitrary normally open switch close conducting and just making often to open external start signal input subgroup and be in closed conducting state.Normally closed outside stop signal input subgroup 72 is made up of the input port of electrical connection normally off device, usually closed conducting state is in, comprising at least one stop signal input port for being electrically connected normally off switch, arbitrary normally off switch open being disconnected and just causes normally closed outside stop signal input subgroup to be in open circuit off-state.When system is normally run, no matter primary or for subsequent use, always have frequency converter to come into operation, therefore for the selection non-master of frequency converter and standby, active and standby operation selects input subgroup 73 to be in closed conducting state.

When primary frequency converter comes into operation, main frame contactor closes conducting, main frame contactor interlocking signal input port 157,158 must not be electric, main frame contactor work input port 153,154 obtains electric, otherwise when primary frequency converter does not come into operation, main frame contactor open circuit disconnects, main frame contactor interlocking signal input port 157,158 obtains electric, and main frame contactor work input port 153,154 must not electricity.When standby variable frequency device comes into operation, standby host contactor closes conducting, and standby host contactor interlocking signal input port 151,152 must not be electric, and standby host contactor work input port 159,160 obtains electric; Otherwise when standby variable frequency device does not come into operation, standby host contactor open circuit disconnects, and standby host contactor interlocking signal input port 151,152 obtains electric, and standby host contactor work input port 159,160 must not electricity.

As shown in Figures 2 to 4, be electrically connected with supply module between described power input 101,102, output O1, O2 of this supply module are parallel with and start branch road 61, main frame operation branch road 62, hostdown branch road 63, main frame output branch road 64 and standby host output branch road 65.

Described startup branch road 61 comprise be cascaded often open external start signal input subgroup 71, normally closed outside stop signal input subgroup 72, active and standbyly run the magnet exciting coil K100 selecting input subgroup 73 and starting relay unit K1.

Described main frame runs branch road 62 and comprises the operating input signal port one 39,140 be cascaded and the magnet exciting coil K200 running relay unit K2.

Described hostdown branch road 63 comprises the magnet exciting coil K300 of fault-signal input port 143, the 144 and power transfer relay unit K3 be cascaded.

Described main frame export branch road 64 comprise be cascaded selection main frame input port 147,148, host activity input port 149,150, standby host contactor interlocking signal input port 151,152 and main frame contactor work input port 153,154.

Described standby host export branch road 65 comprise be cascaded standby host action input port 155,156, main frame contactor interlocking signal input port 157,158 and standby host contactor work input port 159,160.Described standby host contactor work input port 159,160 two ends are also parallel with the magnet exciting coil KA300 of the magnet exciting coil KA100 of the first signal switching relay unit KA1, the magnet exciting coil KA200 of secondary signal transfer relay unit KA2 and the 3rd signal switching relay unit KA3 respectively.

When systems are functioning properly, primary frequency converter connecting system, main frame contactor closes conducting, and standby host contactor open circuit disconnects, and namely standby variable frequency device does not have connecting system.For startup branch road 61, applying external start signal makes often to open external start signal input subgroup 71 and is in closed conducting state, normally closed outside stop signal input subgroup 72 and active and standby operation select input subgroup 73 to be all in closed conducting state, the magnet exciting coil K100 of starting relay unit K1 obtains electric, makes each relay switch action of starting relay unit K1 and starts to host computer feedback frequency conversion control circuit plate.Starting relay unit K1 is mainly used in the starting state reflecting frequency conversion control circuit plate, and therefore, each relay switch of starting relay unit K1 is all because whether frequency conversion control circuit plate starts and action.Branch road 62 is run for main frame, can send after each device ready in host computer start detection motor driving system and allow run signal to make operation input port 139,140 electricly must be in closed conducting state, run input port 139,140 electric, and then the magnet exciting coil K200 running relay unit K2 obtains and electricly makes each relay switch action of operation relay unit K2 and feed back primary frequency converter to host computer and put into operation.Run the state that relay unit K2 is mainly used in reflecting that primary frequency converter has run, therefore, run each relay switch of relay unit K2 all because whether primary frequency converter runs and action.For hostdown branch road 63, fault input port 143,144 must not electricity, and then the magnet exciting coil K300 of power transfer relay unit K3 must not electricity and make the relay switch of power transfer relay unit K3 be failure to actuate and maintain normality.And then power transfer relay unit K3 is mainly used in reflecting the state of primary frequency converter whether fault, therefore, so each relay switch of power transfer relay unit K3 all because of primary frequency converter failure whether and action.Branch road 64 is exported for main frame, main frame input port 147,148 and host activity input port 149,150 obtain electric, standby host contactor interlocking signal input port 151,152 obtains electric because standby host contactor open circuit disconnects, main frame contactor work input port 153,154 obtains electric because main frame contactor comes into operation, thus makes main frame output branch road 64 all be in closed conducting state.Branch road 65 is exported for standby host, standby host action input port 155, 156 must not be electric, main frame contactor interlocking signal input port 157, 158 must not be electric because main frame comes into operation, standby host contactor work input port 159, 160 must not be electric because standby host contactor open circuit disconnects, thus make standby host output branch road be in open circuit off-state, and then the first magnet exciting coil KA100 of signal switching relay unit KA1, the magnet exciting coil KA200 of secondary signal transfer relay unit KA2 and the magnet exciting coil KA300 of the 3rd signal switching relay unit KA3 must not be electric, make the relay switch of the first signal switching relay unit KA1, the relay switch of secondary signal transfer relay unit KA2 and the relay switch of the 3rd signal switching relay unit KA3 are all failure to actuate and maintain main frame frequency converter and obtain control command and to the state of host computer back-to-back running parameter from host computer.Each signal switching relay unit is mainly used in data and switches from primary frequency converter to standby variable frequency device, and these data comprise the reception data of host computer and the data to upper feedback.

When in motor driving system running, primary frequency converter breaks down, and needs to replace primary frequency converter by standby variable frequency device, and primary frequency converter logs off, standby variable frequency device connecting system, and standby host contactor closes conducting, and main frame contactor open circuit disconnects.For startup branch road 61, often opening external start signal input subgroup 71, normally closed outside stop signal input subgroup 72 and active and standby operation selects input subgroup 73 to be in closed conducting state because the starting state of frequency conversion control circuit plate does not become, the magnet exciting coil K100 of starting relay unit K1 obtains electric and makes the relay switch action of starting relay unit K1, maintains and starts to host computer feedback frequency conversion control circuit plate.Run branch road 62 for main frame, running input port 139,140 must not be electric, and then the magnet exciting coil K200 running relay unit K2 must not be electric, makes the relay switch of operation relay unit K2 maintain normality.For hostdown branch road 63, fault input port 143,144 electric, and then the magnet exciting coil K300 of power transfer relay unit K3 obtains and electricly makes the relay switch action of power transfer relay unit K3 and feed back primary frequency converter to host computer and be in malfunction.Branch road 64 is exported for main frame, main frame input port 147,148 and host activity input port 149,150 must not be electric, standby host contactor interlocking signal input port 151,152 because of standby host contactor close conducting and must not electricity, main frame contactor work input port 153,154 must not be electric because main frame contactor open circuit disconnects, thus make main frame output branch road 64 all be in open circuit off-state.Branch road 65 is exported for standby host, standby host action input port 155, 156 must be electric, main frame contactor interlocking signal input port 157, 158 obtain because main frame does not come into operation electric, standby host contactor work input port 159, 160 obtain electric because standby host contactor closes conducting, thus make standby host output branch road 65 be in closed conducting state, and then the first magnet exciting coil KA100 of signal switching relay unit KA1, the magnet exciting coil KA200 of secondary signal transfer relay unit KA2 and the magnet exciting coil KA300 of the 3rd signal switching relay unit KA3 obtains electric, make the relay switch of the first signal switching relay unit KA1, the relay switch of secondary signal transfer relay unit KA2 and the relay switch of the 3rd signal switching relay unit KA3 all action and switching states, standby host frequency converter is made to obtain control command and to the state of host computer back-to-back running parameter from host computer.

For ease of Installation and Debugging, adopt the structure of blockette configured port, as shown in Figure 1, input/output port group described in the utility model preferred embodiment is assigned with and is arranged in the integrated port link block 9 of at least two of being arranged on printed circuit board (PCB) 8.Eight integrated port link blocks 9 are set in this preferred embodiment.Each port can be distributed in each integrated port link block 9 according to the position at external equipment, device place.

Described often opening in external start signal input subgroup 71 is all need the outside switching device started to provide electrical connection port for being in normally open, the utility model preferred embodiment, as shown in Figure 3, described input/output port group also comprises the first external start signal input port 117,118 of the first starting switch for being electrical connectors be in normally open, and for the second external start signal input port 119,120 of the second starting switch of being electrical connectors be in normally open.First, second starting switch described is the switch of manually operation start motor driving system operation, because by operating, action is in closed conducting state.As shown in Figure 3, described external start signal input subgroup 71 of often opening comprises the first external start signal input port 117, the 118 and second external start signal input port 119,120 be connected in parallel.Describedly often open the first relay switch K101 that external start signal input subgroup is also parallel with the starting relay unit K1 of normally open, for playing the effect of locking starting state.Due to automatic reset switch that first, second starting switch is all manual operation in the utility model preferred embodiment, can not be permanently effective to the manual operation of first, second starting switch, first, second starting switch is equivalent to people for providing enabled instruction, in order to keep the enabled instruction of first, second starting switch effective, the first relay switch K101 of starting relay unit K1 is adopted to lock starting state.When motor driving system starts, when closed first, during in the second starting switch arbitrary one, often open external start signal input subgroup 71 and be in closed conducting state, normally closed outside stop signal input subgroup 72 and active and standby operation select input subgroup 73 to be all in closed conducting state, the magnet exciting coil K100 of starting relay unit K1 obtains electric, the first relay switch K101 of normally open starting relay unit K1 is made to close conducting, external start signal input subgroup 71 is often opened in short circuit, the state of external start signal input subgroup 71 is often opened in shielding, namely no matter first, second starting switch be in which kind of state all lock keep normal over start input subgroup 71 and be in closed conducting state.

The switching device that described normally closed outside stop signal input subgroup 72 is normally off provides electrical connection port.The utility model preferred embodiment, as shown in Figure 3, described input/output port group also comprises the first outside stop signal input port 121 of the first shutdown switch for being electrically connected normally off, 122, for the second outside stop signal input port 123 of the second shutdown switch of being electrically connected normally off, 124, for being electrically connected the emergent stop signal input port 125 of the emergency stop switch of normally off, 126, for the first outside interlocking signal input port 127 of the first interlocking switch of being electrically connected normally off, 128, and for the second outside interlocking signal input port 129 of the second interlocking switch of being electrically connected normally off, 130.First, second shutdown switch described is the switching device for manual operation stopping frequency conversion control circuit plate and motor driving system.Emergency stop switch is in order to solution of emergent event needs to stop the switching device of motor driving system.The operating state of first, second interlocking switch reflected load equipment described, when load equipment normally works, first, second interlocking switch is failure to actuate and is in closed conducting state, when there is the fault needing halt system to run in load equipment, first, second interlocking switch action and be in open circuit off-state.Described normally closed outside stop signal input subgroup 72 comprise be cascaded the first outside stop signal input port 121,122, the second outside stop signal input port 123,124, emergent stop signal input port 125,126, first outside interlocking signal input port 127,128 and the second outside interlocking signal input port 129,130.Visible above-mentioned arbitrary normally closed switch action and be in open circuit off-state time, normally closed outside stop signal input subgroup 72 all can be made to be in open circuit off-state.

Active and standby operation selects input subgroup 73 to select situation that is primary, standby variable frequency device for reflecting.The utility model preferred embodiment, as shown in Figure 3, described input/output port group also comprises the primary input signal port one 35,136 of selection for receiving from upper computer selecting primary frequency converter run signal, for receiving the selection spare input signal port one 33,134 from upper computer selecting standby variable frequency device run signal, for receiving the permission input signal port one 37,138 for subsequent use allowing standby variable frequency device operating instruction from host computer, and for being electrically connected the automatic switchover state output terminal mouth 131,132 of automatic active/standby diverter switch.When described automatic active/standby diverter switch is in closed conducting state, the switching just arranged between active/standby frequency converter completes automatically.When automatic active/standby diverter switch be in open circuit off-state be need manually to complete with regard to the switching arranged between active/standby frequency converter.Active and standby operation selects input subgroup 73 comprise the primary branch road of selection in parallel and select emergency bypass; The primary branch road of described selection comprises the first relay switch K301 of the power transfer relay unit K3 of the primary input signal port one 35,136 of the selection be cascaded and normally off.Described selection emergency bypass comprises the selection spare input signal port one 33,134 and permission input signal port one 37,138 for subsequent use that are cascaded, and is connected in parallel on the automatic switchover state output terminal mouth 131,132 selecting spare input signal port one 33,134 two ends.When primary frequency converter comes into operation, main frame runs branch road 62 and closes conducting, hostdown branch road 63 is opened a way and is disconnected, the first relay switch K301 of the power transfer relay unit K3 of normally off closes conducting, the instruction of host computer makes selection primary input signal port one 35,136 obtain electric closed conducting, selects main frame branch road to close conducting.Primary frequency converter failure and when dropping into standby variable frequency device, hostdown branch road 63 closes conducting, the first relay switch K301 action of the power transfer relay unit K3 of normally off and be in open circuit off-state, selects primary leg open to disconnect; The now instruction of host computer makes selection spare input signal port one 33,134 and permission input signal port one for subsequent use 37,138 obtain electric and closed conducting, selects standby host branch road to close conducting.If automatic switchover state output terminal mouth 131,132 is in closed conducting state, namely automatically switch state, the selection spare input signal port one 33,134 with regard to short circuit, as long as so host computer allows standby variable frequency device to run, namely the closed conducting of permission input signal port one 37,138 for subsequent use just completes to switch to and selects emergency bypass to enter closed conducting state.

The utility model preferred embodiment further illustrates each relay unit by following scheme and how to complete primary, standby variable frequency device switching by relay switch.Described input/output port group also comprises the startup feedback output end mouth 200 for exporting frequency conversion control circuit plate starting state to host computer feedback, 204, for exporting the primary fault feedback output end mouth 200 of primary frequency converter failure state to host computer feedback, 205, for receiving the setpoint frequency input port 181 of the setpoint frequency that host computer exports, 182, for exporting the primary setpoint frequency output port 179 of setpoint frequency to primary frequency converter, 180, for exporting the setpoint frequency output port 206 for subsequent use of setpoint frequency to standby variable frequency device, 207, for exporting the frequency feedback output 185 of running frequency to host computer feedback, 186, for receiving the primary frequency feed back input port 183 of the running frequency feedback parameter from primary frequency converter, 184, for receiving the reserve frequency feed back input port 208 of the running frequency feedback parameter from standby variable frequency device, 209, for the current feedback output 189 to host computer feedback output current parameter, 190, for receiving the primary current feedback input port 187 of the running current feedback parameter from primary frequency converter, 188, for receiving the standby current feed back input port 210 of the running current feedback parameter from standby variable frequency device, 211, for the torque feedback output 193 to host computer feedback Driving Torque parameter, 194, for receiving the primary torque feedback input port 191 of the operation torque feedback parameter from primary frequency converter, 192, for receiving the backup torque feed back input port 212 of the operation torque feedback parameter from standby variable frequency device, 213, for the operation feedback output end mouth 171 to host computer feedback inverter running status, 172, for the standby operation feed back input port 214 to host computer feedback standby variable frequency device running status, 215, for the fault feedback output end mouth 173 to host computer feedback inverter malfunction, 174, and for the alternate fault feed back input port 216 to host computer feedback standby variable frequency device fault, 217.

As shown in Figure 5, the two ends of the second relay switch K102 of normally open starting relay unit K1 are electrically connected described startup feedback output end mouth 200,204.Close conducting when main frame runs branch road 62, the second relay switch K102 action of starting relay unit K1 and closed conducting, feed back primary frequency converter to host computer start by starting feedback output end mouth 200,204.The two ends of the second relay switch K302 of the power transfer relay unit K3 of normally open are electrically connected primary fault feedback output end mouth 200,205.When hostdown branch road 63 closes conducting, the second relay switch K302 action of power transfer relay unit K3 and closed conducting, reflect primary frequency converter failure state by primary fault feedback output end mouth 200,205 to host computer.

As shown in Figure 6, the first relay switch KA101 of the first signal switching relay unit KA1 and the second relay switch KA102 common port MA11, MA12 are separately electrically connected setpoint frequency input port 181,182 respectively.The first relay switch KA101 and the second relay switch KA102 normal-closed end CA11, CA12 separately of first signal switching relay unit KA1 are electrically connected primary setpoint frequency output port 179,180 respectively.The first relay switch KA101 of the first signal switching relay unit KA1 and the second relay switch KA102 action closing end OA11, OA12 are separately electrically connected setpoint frequency output port 206,207 for subsequent use respectively.Close conducting when main frame exports branch road 64, when standby host exports the disconnection of branch road 65 open circuit, setpoint frequency input port 181,182 is electrically connected with primary setpoint frequency output port 179,180, and setpoint frequency is sent to primary frequency converter by host computer.Disconnect when main frame exports branch road 64 open circuit, standby host exports branch road 65 and closes conducting, the magnet exciting coil KA100 of the first signal switching relay unit KA1 obtains electric, the port be electrically connected with setpoint frequency input port 181,182 is switched to setpoint frequency output port 206,207 for subsequent use by the first relay switch KA101 and the second relay switch KA102 action of the first signal switching relay unit KA1, and setpoint frequency is sent to standby variable frequency device by host computer.

As shown in Figure 7, the 3rd relay switch KA103 of the first signal switching relay unit KA1 and the 4th relay switch KA104 common port MA13, MA14 are separately electrically connected frequency feedback output 185,186 respectively.The 3rd relay switch KA103 and the 4th relay switch KA104 normal-closed end CA13, CA14 separately of first signal switching relay unit KA1 are electrically connected primary frequency feed back input port 183,184 respectively.The 3rd relay switch KA103 of the first signal switching relay unit KA1 and the 4th relay switch KA104 action closing end OA13, OA14 are separately electrically connected reserve frequency feed back input port 208,209 respectively.Close conducting when main frame exports branch road 64, when standby host exports the disconnection of branch road 65 open circuit, frequency feedback output 185,186 is electrically connected with primary frequency feed back input port 183,184, and primary frequency converter is to host computer back-to-back running frequency data.Disconnect when main frame exports branch road 64 open circuit, standby host exports branch road 65 and closes conducting, the magnet exciting coil KA100 of the first signal switching relay unit KA1 obtains electric, the port be electrically connected with frequency feedback output 185,186 is switched to reserve frequency feed back input port 208,209 by the 3rd relay switch KA103 and the 4th relay switch KA104 action of the first signal switching relay unit KA1, and standby variable frequency device is to host computer back-to-back running frequency data.

As shown in Figure 8, the first relay switch KA201 of secondary signal transfer relay unit KA2 and the second relay switch KA202 common port MA21, MA22 are separately electrically connected current feedback output 189,190 respectively.The first relay switch KA201 and the second relay switch KA202 normal-closed end CA21, CA22 separately of secondary signal transfer relay unit KA2 are electrically connected primary current feedback input port 187,188 respectively.The first relay switch KA201 of secondary signal transfer relay unit KA2 and the second relay switch KA202 action closing end OA21, OA22 are separately electrically connected standby current feed back input port 210,211 respectively.Close conducting when main frame exports branch road 64, when standby host exports the disconnection of branch road 65 open circuit, current feedback output 189,190 is electrically connected with primary current feedback input port 187,188, and primary frequency converter is to host computer back-to-back running current data.Disconnect when main frame exports branch road 64 open circuit, standby host exports branch road 65 and closes conducting, the magnet exciting coil KA200 of secondary signal transfer relay unit KA2 obtains electric, the port be electrically connected with current feedback output 189,190 is switched to standby current feed back input port 210,211 by the first relay switch KA201 and the second relay switch KA202 action of secondary signal transfer relay unit KA2, and standby variable frequency device is to host computer back-to-back running current data.

As shown in Figure 9, the 3rd relay switch KA203 of secondary signal transfer relay unit KA2 and the 4th relay switch KA204 common port MA23, MA24 are separately electrically connected torque feedback output 193,194 respectively.The 3rd relay switch KA203 and the 4th relay switch KA204 normal-closed end CA23, CA24 separately of secondary signal transfer relay unit KA2 are electrically connected primary torque feedback input port 191,192 respectively.The 3rd relay switch KA203 of secondary signal transfer relay unit KA1 and the 4th relay switch KA204 action closing end OA23, OA24 are separately electrically connected backup torque feed back input port 212,213 respectively.Close conducting when main frame exports branch road 64, when standby host exports the disconnection of branch road 65 open circuit, torque feedback output 193,194 is electrically connected with primary torque feedback input port 191,192, and primary frequency converter is to host computer back-to-back running torque data.Disconnect when main frame exports branch road 64 open circuit, standby host exports branch road 65 and closes conducting, the magnet exciting coil KA200 of secondary signal transfer relay unit KA2 obtains electric, the port be electrically connected with torque feedback output 193,194 is switched to backup torque feed back input port 212,213 by the 3rd relay switch KA203 and the 4th relay switch KA204 action of secondary signal transfer relay unit KA2, and standby variable frequency device is to host computer back-to-back running torque data.

As shown in Figure 10, the first relay switch KA301 of the 3rd signal switching relay unit KA3 and the second relay switch KA302 common port MA31, MA32 are separately electrically connected respectively and run feedback output end mouth 171,172.The first relay switch KA301 of the 3rd signal switching relay unit KA3 and the second relay switch KA302 normal-closed end CA31, CA32 are separately electrically connected the two ends of the first relay switch K201 of the operation relay unit K2 of normally open respectively.The first relay switch KA301 of the 3rd signal switching relay unit KA3 and the second relay switch KA302 action closing end OA31, OA32 are separately electrically connected standby operation feed back input port 214,215 respectively.When main frame runs, branch road 62 closes conducting, hostdown branch road 63 is opened a way disconnects, main frame exports branch road 64 and closes conducting, when standby host exports the disconnection of branch road 65 open circuit, the magnet exciting coil K200 running relay unit K2 obtains electric, run the first relay switch K201 action of relay unit K2 and close conducting, feeding back primary relay run signal by operation feedback output end mouth 171,172 to host computer; When main frame runs, branch road 62 open circuit disconnects, hostdown branch road 63 closes conducting, main frame exports branch road 64 open circuit and disconnects, when standby host output branch road 65 closes conducting, run the magnet exciting coil K200 dead electricity of relay unit K2, the the first relay switch K201 running relay unit K2 opens a way and disconnects, the first relay switch KA301 of the 3rd signal switching relay unit KA3 and the second relay switch KA302 action will run feedback output end mouth 171,172 and be electrically connected standby operation feed back input port 214,215, and standby variable frequency device is to host computer back-to-back running state.

As shown in figure 11, the 3rd relay switch KA303 of the 3rd signal switching relay unit KA3 and the 4th relay switch KA304 common port MA33, MA34 separately electrical connection fault feedback output end mouth 173,174 respectively.The 3rd relay switch KA303 of the 3rd signal switching relay unit KA3 and the 4th relay switch KA304 normal-closed end CA33, CA34 are separately electrically connected the 3rd relay switch K303 of the power transfer relay unit K3 of normally off respectively.The 3rd relay switch KA303 of the 3rd signal switching relay unit KA3 and the 4th relay switch KA304 action closing end OA33, OA34 are separately electrically connected alternate fault feed back input port 216,217 respectively.When main frame runs, branch road 62 closes conducting, hostdown branch road 63 is opened a way disconnects, main frame exports branch road 64 and closes conducting, when standby host exports the disconnection of branch road 65 open circuit, the magnet exciting coil K300 dead electricity of power transfer relay unit K3, the 3rd relay switch K303 of power transfer relay unit K3 closes conducting, feeds back primary relay fault-signal by fault feedback output end mouth 173,174 to host computer; When main frame runs, branch road 62 open circuit disconnects, hostdown branch road 63 closes conducting, main frame exports branch road 64 open circuit and disconnects, when standby host output branch road 65 closes conducting, the magnet exciting coil K300 of power transfer relay unit K3 obtains electric, the 3rd relay switch K303 of power transfer relay unit K3 opens a way and disconnects, fault feedback output end mouth 173,174 is electrically connected alternate fault feed back input port 216,217 by the 3rd relay switch KA303 of the 3rd signal switching relay unit KA3 and the 4th relay switch KA304 action, and standby variable frequency device feeds back malfunction to host computer.

For the benefit of fault location, the utility model preferred embodiment, described input/output port group also comprises the operation indication output end mouth 141,142 for being electrically connected run indicator, for the faulty indication output port 145,146 of electrical connection fault indicator light, and for being electrically connected the standby operation indication output end mouth 161,162 of standby variable frequency device run indicator.As shown in Figure 3 and Figure 4, the two ends that indication output end 141,142 is connected in parallel on the magnet exciting coil K200 running relay unit K2 are run.Faulty indication output 145,146 is connected in parallel on the magnet exciting coil K300 of power transfer relay unit K3.Standby operation indication output end mouth 161,162 is connected in parallel on standby host contactor work input port 159,160 two ends.

As shown in Figure 1, frequency conversion control circuit plate also comprises the strong air-cooler power transfer relay unit K4 be arranged on printed circuit board (PCB) 8, and this strong air-cooler power transfer relay unit K4 comprises strong cold magnet exciting coil K400 and strong cold relay switch K401.

Described input/output port group also comprises the breaker closing input port 163,164 for receiving strong air-cooler breaker closing status signal, contactor for receiving strong air-cooler contactor closure state signal closes input port 165,166, for receiving the circuit breaker trip input port 167,168 of strong air-cooler breaker trip condition signal, strong cold feedback common terminal 302, strong cold Normal Feedback output 303, and strong cold fault output 301.Strong cold feedback common terminal 302 and strong cold Normal Feedback output 303 are for feeding back strong air-cooler status signal working properly to host computer, strong cold feedback common terminal 302 and strong cold fault output 301 are for feeding back strong air-cooler fault status signal to host computer.

As shown in Figure 3, the strong air-cooler that is also parallel with between output O1, O2 of described supply module runs branch road and strong air-cooler fault branch.

Strong air-cooler run branch road comprise be cascaded breaker closing input port 163,164, the 3rd relay switch K103 of normally open starting relay unit K1 and contactor close input port 165,166.When frequency conversion control circuit plate starts, start branch road 61 and close conducting, the Energizing unit K100 of starting relay unit K1 obtains electric, and the 3rd relay switch K103 of starting relay unit K1 closes conducting, strong air-cooler runs branch road and closes conducting, and strong air-cooler puts into operation.

Strong air-cooler fault branch comprises the strong cold magnet exciting coil K400 of circuit breaker trip input port 167, the 168 and strong air-cooler power transfer relay unit K4 be cascaded.When strong air-cooler fault-free, circuit breaker trip input port 167,168 is because of disconnection of opening a way without trip signal, and strong cold wind and fault branch open circuit disconnect; When strong air-cooler breaks down, circuit breaker trip input port 167,168 closes conducting because receiving trip signal, and the strong cold magnet exciting coil K400 of strong air-cooler power transfer relay unit K4 obtains electric.

As shown in figure 12, the strong cold feedback common terminal 302 of common port electrical connection of the strong cold relay switch K401 of strong air-cooler power transfer relay unit K4, the strong cold Normal Feedback output 303 of normal-closed end electrical connection of the strong cold relay switch K401 of strong air-cooler power transfer relay unit K4, the action closing end of the strong cold relay switch K401 of strong air-cooler power transfer relay unit K4 is electrically connected strong cold fault output 301.When strong air-cooler normally works, strong cold relay switch K401 is in normal-closed end, and strong cold feedback common terminal 302 and strong cold Normal Feedback output 303 feed back strong air-cooler status signal working properly to host computer; During strong air-cooler fault, the strong cold magnet exciting coil K400 of strong air-cooler power transfer relay unit K4 obtains electric, strong cold relay switch K401 action and make strong cold feedback common terminal 302 and strong cold fault output 301 feed back strong air-cooler fault status signal to host computer.

In order to fault location, the utility model preferred embodiment, described input/output port group also comprises the strong cold fault instruction port 169,170 for being electrically connected strong air-cooler malfunction indicator lamp.As shown in Figure 3, strong cold fault instruction port 169,170 is connected in parallel on the strong cold magnet exciting coil K400 two ends of strong air-cooler power transfer relay unit K4.

As shown in Figure 1, frequency conversion control circuit plate also comprises and is arranged on time-delay relay unit KT on this printed circuit board (PCB) 8 and supply relay unit KC.

Described input/output port group also comprises the supervision input port 103,104 for monitoring city's electricity condition, power supply for being electrically connected uninterruption power source equipment keeps the power supply of input switch to keep input port 105,106, and for providing at least one expansion of power supply output port of power supply to frequency conversion control circuit plate external equipment.The utility model preferred embodiment is provided with the first expansion of power supply output port 107,108, second expansion of power supply output port 109,110,3rd expansion of power supply output port the 111,112, the 4th expansion of power supply output port 113,114, and the 5th expansion of power supply output port 115,116.

As shown in Figure 2, described supply module comprises the time delay branch road, power supply maintenance branch road and the power supply output branch road that are connected in parallel on power input 101,102 two ends.

Described time delay branch road comprises the time delay magnet exciting coil KT100 of supervision input port 103, the 104 and time-delay relay unit KT be cascaded.

Described power supply keeps branch road to comprise the TDO relay switch KT101 of the time-delay relay unit KT be cascaded and the power supply magnet exciting coil KC100 of supply relay unit KC, and the power supply being connected in parallel on TDO relay switch KT101 two ends keeps input port 105,106.

Described power supply exports output O1, O2 that branch road comprises relay switch group and the supply module be cascaded.Described relay switch group comprises the first power supply relay switch KC101, the second power supply relay switch KC102 of the supply relay unit KC be connected in parallel.All expansion of power supply output ports are all connected in parallel on output O1, O2 two ends of supply module.

When civil power input power input 101, when 102, monitor input port 103, 104 closed conductings, time delay branch road closes conducting, the time delay magnet exciting coil KT100 of time-delay relay unit KT obtains electric, the TDO relay switch KT101 of time-delay relay unit KT closes conducting, power supply keeps branch road to close conducting, the power supply magnet exciting coil KC100 of supply relay unit KC obtains electric, power supply exports branch road and closes conducting, the first power supply relay switch KC101 of supply relay unit KC, second power supply relay switch KC102 closes conducting, thus at the output O1 of supply module, O2 out-put supply, external equipment can from the first expansion of power supply output port 107 simultaneously, 108, second expansion of power supply output port 109, 110, 3rd expansion of power supply output port 111, 112, 4th expansion of power supply output port 113, 114, with the 5th expansion of power supply output port 115, 116 obtain power supply.When momentary power failure situation appears in civil power, when namely shaking electric, power supply keeps the closed conducting of input port 105,106, prevents from causing system out of service because shaking electricity.When civil power occurs powering-off state really, power supply keeps input port 105, 106 closed conductings, monitor input port 103, 104 open circuits disconnect, the time delay magnet exciting coil KT100 dead electricity of time-delay relay unit KT, the TDO relay switch KT101 deferred action of time-delay relay unit KT, in latency period, uninterruption power source device start provides electric energy, monitor input port 103, 104 closed conductings again, the time delay magnet exciting coil KT100 of time-delay relay unit KT obtains electric, the TDO relay switch KT101 closed conducting again of time-delay relay unit KT, power supply exports branch road and remains closed conducting during this period, thus guarantee continued power, thus improve the operational reliability of motor driving system.

Claims

1. a frequency conversion control circuit plate, be arranged in the motor driving system for load equipment configuration, for providing operational factor for primary in system, standby variable frequency device, the service data of, standby variable frequency device primary to system feedback, and complete active/standby frequency converter and switch; Described system configuration has host computer, and this host computer exports control command, and the feedback data of each equipment in receiving system; Described primary frequency converter is by main frame contactor connecting system, and standby variable frequency device is by standby host contactor connecting system; It is characterized in that:

Described frequency conversion control circuit plate comprises printed circuit board (PCB) (8), be arranged on the starting relay unit (K1) on this printed circuit board (PCB) (8), run relay unit (K2), power transfer relay unit (K3), the first signal switching relay unit (KA1), secondary signal transfer relay unit (KA2) and the 3rd signal switching relay unit (KA3), and be arranged on the input/output port group on printed circuit board (PCB) (8); All relay units all comprise respective magnet exciting coil and at least one relay switch;

Described input/output port group comprises power input (101, 102), often open external start signal input subgroup, normally closed outside stop signal input subgroup, input subgroup is selected in active and standby operation, for receiving the operation input port (139 of the permission run signal from host computer, 140), for receiving the fault input port (143 of the fault-signal from host computer, 144), for receiving the selection main frame input port (147 of the primary frequency converter signal of selection from host computer, 148), for receiving the primary frequency converter action input port (149 from host computer, 150), for receiving the standby host contactor interlocking signal input port (151 of standby host contactor interlock switch signal, 152), for the main frame contactor work input port (153 of Receiving Host contactor operating state, 154), for receiving the standby variable frequency device action input port (155 from host computer, 156), for the main frame contactor interlocking signal input port (157 of Receiving Host contactor interlock switch signal, 158), for receiving the standby host contactor work input port (159 of standby host contactor operating state, 160),

Often open external start signal input subgroup and be usually in the short open state of open circuit, comprising at least one enabling signal input port for being electrically connected normally open switch, making arbitrary normally open switch close conducting and just making often to open external start signal input subgroup and be in closed conducting state;

Normally closed outside stop signal input subgroup is in closed conducting state usually, comprising at least one stop signal input port for being electrically connected normally off switch, arbitrary normally off switch open being disconnected and just causes normally closed outside stop signal input subgroup to be in open circuit off-state;

When system is normally run, active and standby operation selects input subgroup to be in closed conducting state;

When primary frequency converter comes into operation, main frame contactor closes conducting, main frame contactor interlocking signal input port (157,158) must not be electric, otherwise, when primary frequency converter does not come into operation, main frame contactor open circuit disconnects, and main frame contactor interlocking signal input port (157,158) obtains electric; When standby variable frequency device comes into operation, standby host contactor closes conducting, standby host contactor interlocking signal input port (151,152) must not be electric, otherwise, when standby variable frequency device does not come into operation, standby host contactor open circuit disconnects, and standby host contactor interlocking signal input port (151,152) obtains electric;

Described power input is electrically connected with supply module between (101,102), and the output (O1, O2) of this supply module is parallel with and starts branch road, main frame operation branch road, hostdown branch road, main frame output branch road and standby host output branch road;

Described startup branch road comprise be cascaded often open external start signal input subgroup, magnet exciting coil (K100) that input subgroup and starting relay unit (K1) are selected in normally closed outside stop signal input subgroup, active and standby operation;

Described main frame runs branch road and comprises the operating input signal port (139,140) be cascaded and the magnet exciting coil (K200) running relay unit (K2);

Described hostdown branch road comprises the magnet exciting coil (K300) of fault-signal input port (143,144) and the power transfer relay unit (K3) be cascaded;

Described main frame exports branch road and comprises the selection main frame input port (147,148), host activity input port (149,150), standby host contactor interlocking signal input port (151,152) and the main frame contactor work input port (153,154) that are cascaded;

Described standby host exports branch road and comprises the standby host action input port (155,156), main frame contactor interlocking signal input port (157,158) and the standby host contactor work input port (159,160) that are cascaded; Described standby host contactor work input port (159,160) two ends are also parallel with the magnet exciting coil (KA300) of the magnet exciting coil (KA100) of the first signal switching relay unit (KA1), the magnet exciting coil (KA200) of secondary signal transfer relay unit (KA2) and the 3rd signal switching relay unit (KA3) respectively;

When systems are functioning properly, primary frequency converter connecting system, main frame contactor closes conducting, and standby host contactor open circuit disconnects, and namely standby variable frequency device does not have connecting system, often opening external start signal input subgroup, normally closed outside stop signal input subgroup and active and standby operation selects input subgroup to be all in closed conducting state, the magnet exciting coil (K100) of starting relay unit (K1) obtains electric, makes each relay switch action of starting relay unit (K1) and starts to host computer feedback frequency conversion control circuit plate, run input port (139,140) electric, and then run relay unit (K2) magnet exciting coil (K200) electricly make each relay switch action of operation relay unit (K2) and feed back primary frequency converter to host computer and put into operation, fault input port (143,144) must not electricity, and then the magnet exciting coil (K300) of power transfer relay unit (K3) must not electricity and make the relay switch of power transfer relay unit (K3) be failure to actuate and maintain normality, main frame input port (147,148) and host activity input port (149,150) obtain electric, standby host contactor interlocking signal input port (151,152) obtains electric because standby host contactor open circuit disconnects, main frame contactor work input port (153,154) obtains electric because main frame contactor comes into operation, thus makes main frame output branch road all be in closed conducting state, standby host action input port (155, 156) must not be electric, main frame contactor interlocking signal input port (157, 158) must not be electric because main frame comes into operation, standby host contactor work input port (159, 160) must not be electric because standby host contactor open circuit disconnects, thus make standby host output branch road be in open circuit off-state, and then first magnet exciting coil (KA100) of signal switching relay unit (KA1), the magnet exciting coil (KA200) of secondary signal transfer relay unit (KA2) and the magnet exciting coil (KA300) of the 3rd signal switching relay unit (KA3) all must not be electric, make the relay switch of the first signal switching relay unit (KA1), the relay switch of secondary signal transfer relay unit (KA2) and the relay switch of the 3rd signal switching relay unit (KA3) are all failure to actuate and maintain main frame frequency converter from host computer and obtain control command and to the state of host computer back-to-back running parameter,

When primary frequency converter failure, primary frequency converter logs off, standby variable frequency device connecting system, and standby host contactor closes conducting, and main frame contactor open circuit disconnects, often opening external start signal input subgroup, normally closed outside stop signal input subgroup and active and standby operation selects input subgroup to be in closed conducting state, the magnet exciting coil (K100) of starting relay unit (K1) electric and make the relay switch action of starting relay unit (K1), maintain to host computer feedback frequency conversion control circuit plate and start, running input port (139,140) must not be electric, and then the magnet exciting coil (K200) running relay unit (K2) must not be electric, makes the relay switch of operation relay unit (K2) maintain normality, fault input port (143,144) electric, and then the magnet exciting coil (K300) of power transfer relay unit (K3) electricly make the relay switch action of power transfer relay unit (K3) and feed back primary frequency converter to host computer and be in malfunction, main frame input port (147,148) and host activity input port (149,150) must not be electric, standby host contactor interlocking signal input port (151,152) because of standby host contactor close conducting and must not electricity, main frame contactor work input port (153,154) must not be electric because main frame contactor open circuit disconnects, thus make main frame output branch road all be in open circuit off-state, standby host action input port (155, 156) must be electric, main frame contactor interlocking signal input port (157, 158) obtain because main frame does not come into operation electric, standby host contactor work input port (159, 160) obtain electric because standby host contactor closes conducting, thus make standby host output branch road be in closed conducting state, and then first magnet exciting coil (KA100) of signal switching relay unit (KA1), the magnet exciting coil (KA200) of secondary signal transfer relay unit (KA2) and the magnet exciting coil (KA300) of the 3rd signal switching relay unit (KA3) all obtain electric, make the relay switch of the first signal switching relay unit (KA1), the relay switch of secondary signal transfer relay unit (KA2) and the relay switch of the 3rd signal switching relay unit (KA3) all action and switching states, standby host frequency converter is made to obtain control command and to the state of host computer back-to-back running parameter from host computer.

2. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described input/output port group also comprises the first external start signal input port (117,118) of the first starting switch for being electrical connectors be in normally open, and for the second external start signal input port (119,120) of the second starting switch of being electrical connectors be in normally open; First, second starting switch described is the switch of manually operation start system cloud gray model, because by operating, action is in closed conducting state;

Described external start signal input subgroup of often opening comprises the first external start signal input port (117,118) and the second external start signal input port (119,120) that are connected in parallel;

Describedly often open the first relay switch (K101) that external start signal input subgroup is also parallel with the starting relay unit (K1) of normally open, when closed first, during in the second starting switch arbitrary one, often open external start signal input subgroup and be in closed conducting state, normally closed outside stop signal input subgroup and active and standby operation select input subgroup to be all in closed conducting state, the magnet exciting coil (K100) of starting relay unit (K1) obtains electric, make the closed conducting of first relay switch (K101) of normally open starting relay unit (K1), the state of external start signal input subgroup is often opened in shielding, namely no matter first, second starting switch be in which kind of state all lock keep normal over start input subgroup and be in closed conducting state.

3. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described input/output port group also comprises the first outside stop signal input port (121 of the first shutdown switch for being electrically connected normally off, 122), for the second outside stop signal input port (123 of the second shutdown switch of being electrically connected normally off, 124), for being electrically connected the emergent stop signal input port (125 of the emergency stop switch of normally off, 126), for the first outside interlocking signal input port (127 of the first interlocking switch of being electrically connected normally off, 128), and for the second outside interlocking signal input port (129 of the second interlocking switch of being electrically connected normally off, 130),

The operating state of first, second interlocking switch reflected load equipment described, when load equipment normally works, first, second interlocking switch is failure to actuate and is in closed conducting state, when there is the fault needing halt system to run in load equipment, first, second interlocking switch action and be in open circuit off-state;

Described normally closed outside stop signal input subgroup comprises the first outside stop signal input port (121,122), the second outside stop signal input port (123,124), emergent stop signal input port (125,126), the first outside interlocking signal input port (127,128) and the second outside interlocking signal input port (129,130) that are cascaded.

4. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described input/output port group also comprises the primary input signal port of selection (135,136) for receiving from upper computer selecting primary frequency converter run signal, for receiving the selection spare input signal port (133,134) from upper computer selecting standby variable frequency device run signal, for receiving the permission input signal port (137,138) for subsequent use allowing standby variable frequency device operating instruction from host computer, and for being electrically connected the automatic switchover state output terminal mouth (131,132) of automatic active/standby diverter switch;

When described automatic active/standby diverter switch is in closed conducting state, the switching just arranged between active/standby frequency converter completes automatically; When automatic active/standby diverter switch be in open circuit off-state be need manually to complete with regard to the switching arranged between active/standby frequency converter;

Active and standby operation selects input subgroup comprise the primary branch road of selection in parallel and select emergency bypass; The primary branch road of described selection comprises first relay switch (K301) of the power transfer relay unit (K3) of the primary input signal port of the selection be cascaded (135,136) and normally off; Described selection emergency bypass comprises the selection spare input signal port (133,134) and permission input signal port for subsequent use (137,138) that are cascaded, and is connected in parallel on the automatic switchover state output terminal mouth (131,132) selecting spare input signal port (133,134) two ends.

5. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described input/output port group also comprises the startup feedback output end mouth (200 for exporting frequency conversion control circuit plate starting state to host computer feedback, 204), for exporting the primary fault feedback output end mouth (200 of primary frequency converter failure state to host computer feedback, 205), for receiving the setpoint frequency input port (181 of the setpoint frequency that host computer exports, 182), for exporting the primary setpoint frequency output port (179 of setpoint frequency to primary frequency converter, 180), for exporting the setpoint frequency output port (206 for subsequent use of setpoint frequency to standby variable frequency device, 207), for exporting the frequency feedback output (185 of running frequency to host computer feedback, 186), for receiving the primary frequency feed back input port (183 of the running frequency feedback parameter from primary frequency converter, 184), for receiving the reserve frequency feed back input port (208 of the running frequency feedback parameter from standby variable frequency device, 209), for the current feedback output (189 to host computer feedback output current parameter, 190), for receiving the primary current feedback input port (187 of the running current feedback parameter from primary frequency converter, 188), for receiving the standby current feed back input port (210 of the running current feedback parameter from standby variable frequency device, 211), for the torque feedback output (193 to host computer feedback Driving Torque parameter, 194), for receiving the primary torque feedback input port (191 of the operation torque feedback parameter from primary frequency converter, 192), for receiving the backup torque feed back input port (212 of the operation torque feedback parameter from standby variable frequency device, 213), for the operation feedback output end mouth (171 to host computer feedback inverter running status, 172), for the standby operation feed back input port (214 to host computer feedback standby variable frequency device running status, 215), for the fault feedback output end mouth (173 to host computer feedback inverter malfunction, 174), and for the alternate fault feed back input port (216 to host computer feedback standby variable frequency device fault, 217),

The two ends of second relay switch (K102) of normally open starting relay unit (K1) are electrically connected described startup feedback output end mouth (200,204); The two ends of second relay switch (K302) of the power transfer relay unit (K3) of normally open are electrically connected primary fault feedback output end mouth (200,205);

First relay switch (KA101) of the first signal switching relay unit (KA1) and the respective common port of the second relay switch (KA102) are electrically connected setpoint frequency input port (181,182) respectively; First relay switch (KA101) of the first signal switching relay unit (KA1) and the respective normal-closed end of the second relay switch (KA102) are electrically connected primary setpoint frequency output port (179,180) respectively; First relay switch (KA101) of the first signal switching relay unit (KA1) and the respective action closing end of the second relay switch (KA102) are electrically connected setpoint frequency output port for subsequent use (206,207) respectively;

3rd relay switch (KA103) of the first signal switching relay unit (KA1) and the respective common port of the 4th relay switch (KA104) are electrically connected frequency feedback output (185,186) respectively; 3rd relay switch (KA103) of the first signal switching relay unit (KA1) and the respective normal-closed end of the 4th relay switch (KA104) are electrically connected primary frequency feed back input port (183,184) respectively; 3rd relay switch (KA103) of the first signal switching relay unit (KA1) and the respective action closing end of the 4th relay switch (KA104) are electrically connected reserve frequency feed back input port (208,209) respectively;

First relay switch (KA201) of secondary signal transfer relay unit (KA2) and the respective common port of the second relay switch (KA202) are electrically connected current feedback output (189,190) respectively; First relay switch (KA201) of secondary signal transfer relay unit (KA2) and the respective normal-closed end of the second relay switch (KA202) are electrically connected primary current feedback input port (187,188) respectively; First relay switch (KA201) of secondary signal transfer relay unit (KA2) and the respective action closing end of the second relay switch (KA202) are electrically connected standby current feed back input port (210,211) respectively;

3rd relay switch (KA203) of secondary signal transfer relay unit (KA2) and the respective common port of the 4th relay switch (KA204) are electrically connected torque feedback output (193,194) respectively; 3rd relay switch (KA203) of secondary signal transfer relay unit (KA2) and the respective normal-closed end of the 4th relay switch (KA204) are electrically connected primary torque feedback input port (191,192) respectively; 3rd relay switch (KA203) of secondary signal transfer relay unit (KA1) and the respective action closing end of the 4th relay switch (KA204) are electrically connected backup torque feed back input port (212,213) respectively;

First relay switch (KA301) of the 3rd signal switching relay unit (KA3) and the respective common port of the second relay switch (KA302) are electrically connected respectively and run feedback output end mouth (171,172); First relay switch (KA301) of the 3rd signal switching relay unit (KA3) and the respective normal-closed end of the second relay switch (KA302) are electrically connected the two ends of first relay switch (K201) of the operation relay unit (K2) of normally open respectively; First relay switch (KA301) of the 3rd signal switching relay unit (KA3) and the respective action closing end of the second relay switch (KA302) are electrically connected standby operation feed back input port (214,215) respectively;

3rd relay switch (KA303) of the 3rd signal switching relay unit (KA3) and the respective common port of the 4th relay switch (KA304) electrical connection fault feedback output end mouth (173,174) respectively; 3rd relay switch (KA303) of the 3rd signal switching relay unit (KA3) and the respective normal-closed end of the 4th relay switch (KA304) are electrically connected the 3rd relay switch (K303) of the power transfer relay unit (K3) of normally off respectively; 3rd relay switch (KA303) of the 3rd signal switching relay unit (KA3) and the respective action closing end of the 4th relay switch (KA304) are electrically connected alternate fault feed back input port (216,217) respectively.

6. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described input/output port group also comprises the operation indication output end mouth (141,142) for being electrically connected run indicator, for the faulty indication output port (145,146) of electrical connection fault indicator light, and for being electrically connected the standby operation indication output end mouth (161,162) of standby variable frequency device run indicator;

Run the two ends that indication output end (141,142) is connected in parallel on the magnet exciting coil (K200) running relay unit (K2); Faulty indication output (145,146) is connected in parallel on the magnet exciting coil (K300) of power transfer relay unit (K3); Standby operation indication output end mouth (161,162) is connected in parallel on standby host contactor work input port (159,160) two ends.

7. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described motor driving system also comprises at least one strong air-cooler, and strong air-cooler by the strong air-cooler contactor access motor driving system of each self-configuring, and exits motor driving system by the strong air-cooler circuit breaker of each self-configuring;

Frequency conversion control circuit plate also comprises the strong air-cooler power transfer relay unit (K4) be arranged on printed circuit board (PCB) (8), and this strong air-cooler power transfer relay unit (K4) comprises strong cold magnet exciting coil (K400) and strong cold relay switch (K401);

Described input/output port group also comprises the breaker closing input port (163,164) for receiving strong air-cooler breaker closing status signal, contactor for receiving strong air-cooler contactor closure state signal closes input port (165,166), for receiving the circuit breaker trip input port (167,168) of strong air-cooler breaker trip condition signal, strong cold feedback common terminal (302), strong cold Normal Feedback output (303), and strong cold fault output (301); Strong cold feedback common terminal (302) and strong cold Normal Feedback output (303) are for feeding back strong air-cooler status signal working properly to host computer, strong cold feedback common terminal (302) and strong cold fault output (301) are for feeding back strong air-cooler fault status signal to host computer;

Also be parallel with strong air-cooler between the output (O1, O2) of described supply module and run branch road and strong air-cooler fault branch;

Strong air-cooler runs branch road and comprises the breaker closing input port (163,164), the 3rd relay switch (K103) of normally open starting relay unit (K1) and the contactor that are cascaded and close input port (165,166);

Strong air-cooler fault branch comprises the strong cold magnet exciting coil (K400) of circuit breaker trip input port (167,168) and the strong air-cooler power transfer relay unit (K4) be cascaded;

The strong cold feedback common terminal (302) of common port electrical connection of the strong cold relay switch (K401) of strong air-cooler power transfer relay unit (K4), the strong cold Normal Feedback output (303) of normal-closed end electrical connection of the strong cold relay switch (K401) of strong air-cooler power transfer relay unit (K4), the action closing end of the strong cold relay switch (K401) of strong air-cooler power transfer relay unit (K4) is electrically connected strong cold fault output (301).

8. frequency conversion control circuit plate according to claim 7, is characterized in that:

Described input/output port group also comprises strong cold fault instruction port (169,170) for being electrically connected strong air-cooler malfunction indicator lamp;

Strong cold fault instruction port (169,170) is connected in parallel on strong cold magnet exciting coil (K400) two ends of strong air-cooler power transfer relay unit (K4).

9. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described motor driving system also comprises uninterruption power source equipment;

Frequency conversion control circuit plate also comprises and is arranged on time-delay relay unit (KT) on this printed circuit board (PCB) (8) and supply relay unit (KC);

Described input/output port group also comprises the supervision input port (103,104) for monitoring city's electricity condition, power supply for being electrically connected uninterruption power source equipment keeps the power supply of input switch to keep input port (105,106), and for providing at least one expansion of power supply output port of power supply to frequency conversion control circuit plate external equipment;

Described supply module comprises the time delay branch road, power supply maintenance branch road and the power supply that are connected in parallel on power input (101,102) two ends and exports branch road;

Described time delay branch road comprises the time delay magnet exciting coil (KT100) of supervision input port (103,104) and the time-delay relay unit (KT) be cascaded;

Described power supply keeps branch road to comprise the TDO relay switch (KT101) of the time-delay relay unit (KT) be cascaded and the power supply magnet exciting coil (KC100) of supply relay unit (KC), and the power supply being connected in parallel on TDO relay switch (KT101) two ends keeps input port (105,106);

Described power supply exports the output (O1, O2) that branch road comprises relay switch group and the supply module be cascaded; Described relay switch group comprises the first power supply relay switch (KC101), second power supply relay switch (KC102) of the supply relay unit (KC) be connected in parallel; All expansion of power supply output ports are all connected in parallel on output (O1, O2) two ends of supply module.

10. frequency conversion control circuit plate according to claim 1, is characterized in that:

Described input/output port group is assigned with and is arranged in the integrated port link block (9) of at least two of being arranged on printed circuit board (PCB) (8).